b ) According to Catholic faith, the Catholic Church has been endowed with the whole of revealed truth and all the means of salvation as a gift which cannot be lost. Nevertheless, among the elements and gifts which belong to the Catholic Church (e.g.; the written Word of God, the life of grace, faith, hope and charity etc.) many can exist outside its visible limits. The Churches and ecclesial Communities not in full communion with the Catholic Church have by no means been deprived of signi- ficance and value in the mystery of salvation, for the Spirit of Christ has not refrained from using them as means of salvation. In ways that vary according to the condition of each Church or ecclesial Community, their celebrations are able to nourish the life of grace in their members who participate in them and provide access to the communion of salvation.
Principles and Norms on Ecumenism 102-4